CN204069101U - A kind of communication interface switching device shifter - Google Patents
A kind of communication interface switching device shifter Download PDFInfo
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- CN204069101U CN204069101U CN201420346722.8U CN201420346722U CN204069101U CN 204069101 U CN204069101 U CN 204069101U CN 201420346722 U CN201420346722 U CN 201420346722U CN 204069101 U CN204069101 U CN 204069101U
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Abstract
The utility model discloses a kind of communication interface switching device shifter, belong to mobile phone test technical field, specifically comprise: a kind of communication interface switching device shifter, be applicable in the communication interface test technology of mobile phone, wherein, comprise an interface conversion unit, interface conversion unit comprises: interface module, connects the communication interface of mobile phone to be measured; Detection module, connection interface module, for detecting the type of the communication interface that communication module connects; Modular converter, connection detection module, for interface conversion unit being converted to the pattern with USB interface communication according to the testing result of detection module, or with the pattern of serial port communication.The beneficial effect of technique scheme is: switched can be connected USB interface and serial line interface respectively by pattern, simplifies hardware designs, saves manufacturing cost; By two kinds of test pattern isolation, avoid mutual interference, thus avoid downloading deadlock, can not find the problems such as port.
Description
Technical field
The utility model relates to mobile phone test technical field, particularly relates to a kind of communication interface switching device shifter.
Background technology
The debugging of a kind of mobile phone of serial line interface, indispensable interface when downloading, but user usually use when using mobile phone mostly more be USB interface, instead of the serial line interface used when carrying out mobile phone debugging.If serial line interface is connected separately on download test fixture when carrying out mobile phone test, not only need during research and development on pcb board, reserve corresponding test point, thus take a large amount of system cabling resources, also again fixture to increase a large amount of test probes simultaneously, thus increase the difficulty that fixture manufactures.If but on download test fixture, do not connect serial line interface, the research and development in mobile phone production process and software download step can be had influence on again, especially when mobile phone is produced in enormous quantities and test, can cause software download step and have a strong impact on.In prior art, to downloading the improvement of test fixture normally by the pin D+ (the positive voltage data wire of USB interface) of serial line interface and USB interface and D-(the negative voltage data line of USB interface) shared interface, the difficulty downloading test fixture manufacture can be saved so to a certain extent.But find in actual use.If serial line interface and USB interface share an interface, following problem can be there is:
Because pin D+ and D-has strict requirement to the impedance on its data wire and capacitance-resistance, and two interfaces share cabling can drag down impedance between pin D+ and D-, thus signal transmission is changed, usb function even can be caused time serious normally not use.
Chinese patent (CN2771929) discloses a kind of download clamp, comprise jtag interface, driver element, some sockets, TDO processing unit and the power supply of operating voltage is provided to unit, wherein: jtag interface, its output connects driver element, its input connects PC and TDO processing unit respectively, for setting up the connection of PC and download clamp; Driver element, its output connects each socket respectively, for sending programming code to the CPLD be plugged on each socket; Socket, its output connects TDO processing unit, and the TDO signal that the CPLD chip be plugged on its socket feedback downloads result is sent to TDO processing unit; TDO processing unit, for feeding back to jtag interface by after each TDO signal logic process received.Technique scheme only relates to and being described some interfaces in download clamp, is especially described jtag interface, can not solves the problems of the prior art.
Summary of the invention
According to problems of the prior art, a kind of technical scheme of communication interface switching device shifter is now provided, specifically comprises:
A kind of communication interface switching device, is applicable to, in the communication interface test technology of mobile phone, wherein, comprising:
Interface conversion unit, connects the communication interface of mobile phone to be measured, and for changing the mode of operation of described communication interface switching device according to the described communication interface connected;
Described interface conversion unit comprises:
Interface module, connects the described communication interface of mobile phone to be measured;
Detection module, connects described interface module, for detecting the type of the described communication interface that described interface module connects;
Modular converter, connects described detection module, for the testing result according to described detection module, described interface conversion unit is converted to the pattern with USB interface communication, or with the pattern of serial port communication.
Preferably, this communication interface switching device, wherein, described interface module comprises:
Mark end, connects the identification pine of described USB interface respectively;
Power end, connects the power pin of described USB interface;
Transmitting terminal, connects described mark end, and connects the serial data receiving terminal of a download test cell;
Receiving terminal, connects described modular converter, and connects the serial data transmitting terminal of described download test cell.
Preferably, this communication interface switching device, wherein, described detection module comprises:
Detect field effect transistor, source electrode connects described power end and described modular converter respectively, and drain electrode connects one first feeder ear of described download test module, and grid connects one second feeder ear of described download test module;
Described detection field effect transistor is ended when having detected that described USB interface accesses, and connects when having detected that described serial line interface accesses;
Described first feeder ear is used for powering to the USB device be access in;
Described second feeder ear normally to work required power supply for providing described download test module.
Preferably, this communication interface switching device, wherein, described detection field effect transistor is a P-channel field-effect transistor (PEFT) pipe.
Preferably, this communication interface switching device, wherein, is in series with one first resistance between the described grid of described detection field effect transistor and described second feeder ear.
Preferably, this communication interface switching device, wherein, described modular converter comprises:
Serial ports end, connects the source electrode of described power end and described field effect transistor respectively;
Normal-closed end, connects described receiving terminal;
Chang Kaiduan, as the open end of described modular converter;
Common port, connects described serial ports end;
Control signal input, is connected to described first feeder ear of described download test module, inputs corresponding control signal for the testing result according to described detection module to described modular converter by a bleeder circuit;
Described modular converter connects described common port and described normal-closed end when described detection module has detected that described serial line interface accesses, and connects described common port and described Chang Kaiduan when described detection module has detected that described USB interface accesses.
Preferably, this communication interface switching device, wherein, described bleeder circuit comprises:
Reference node, connects described feeder ear and described control signal input respectively, and ground connection;
Second resistance, is connected between described reference node and described feeder ear;
3rd resistance, described reference node is by described 3rd grounding through resistance.
Preferably, this communication interface switching device, wherein, also comprises:
Base, for placing described interface conversion unit;
Fixed cell, is arranged with described base place plane orthogonal, and one end of described fixed cell is connected on described base;
Active unit, is connected on described fixed cell, and towards or deviate from described base and move;
Test linkage unit, be arranged in described active unit, one end of described test linkage unit connects described interface module by wire, and the other end connects the described communication interface of mobile phone to be measured.
Preferably, this communication interface switching device, wherein, described active unit comprises:
Drop front, be arranged in parallel with described base, and is positioned at above described base;
Motion bar, connects described drop front, for drive described drop front towards or deviate from described base and move;
Joystick, connects described motion bar, controls described motion bar for user;
Described test linkage unit is test probe, connects through described drop front.
Preferably, this communication interface switching device, wherein, also comprises:
Positioning unit, is arranged on described base, for described interface conversion unit is fixed on described base;
Described positioning unit is location notch, and described location notch is arranged at the both sides of described interface conversion unit respectively.
The beneficial effect of technique scheme is: switched can be connected USB interface and serial line interface respectively by pattern, simplify hardware designs, saves manufacturing cost; Two kinds of test patterns are isolated by selector switch simultaneously, avoid mutual interference, thus avoid the download often occurred in usual production process to crash, can not find the problems such as port.
Accompanying drawing explanation
Fig. 1 is in preferred embodiment of the present utility model, in a kind of communication interface switching device shifter, and the structural representation of interface conversion unit interface conversion unit;
Fig. 2 is in preferred embodiment of the present utility model, the circuit diagram that communication interface switching device shifter comprises;
Fig. 3 is in preferred embodiment of the present utility model, a kind of entity structure schematic diagram of communication interface switching device shifter.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but not as restriction of the present utility model.
In preferred embodiment of the present utility model, a kind of communication interface switching device shifter, be applicable in the communication interface test process of mobile phone, this communication interface switching device shifter comprises an interface conversion unit interface conversion unit, the structure of this interface conversion unit is concrete as described in Figure 1, comprising:
Interface module 11, for connecting the communication interface of mobile phone to be measured.In preferred embodiment of the present utility model, above-mentioned communication interface comprises the USB interface of mobile phone test needs, and serial line interface.In preferred embodiment of the present utility model, interface module 11 may be used for the USB interface or the serial line interface that connect mobile phone to be measured.
Detection module 12, connects above-mentioned interface module 11.In preferred embodiment of the present utility model, detection module 12 detects for docking port module 11, further, whether accesses serial line interface for detecting interface module 11.Detection module 12 output detections result subsequently.
Modular converter 13, connects above-mentioned detection module 12.In preferred embodiment of the present utility model, modular converter 13 obtains the testing result that detection module 12 sends, or judges switch to which kind of pattern according to the action of detection module 12.Further, in preferred embodiment of the present utility model, whole communication interface arrangement is switched to the mode of operation of carrying out communication with USB interface by modular converter 13 according to the testing result of detection module 12, or switches to the mode of operation of carrying out communication with serial line interface.
In preferred embodiment of the present utility model, as shown in Figure 1, also comprise a download test cell (not shown), this download test cell connects above-mentioned interface module 11, detection module 12 and modular converter 13 respectively, carries out download test operation for the mode of operation current according to interface conversion unit to mobile phone to be measured.
In preferred embodiment of the present utility model, in order to further illustrate the internal structure of above-mentioned interface conversion unit, and its operation principle, as shown in Figure 2, give the circuit structure of an above-mentioned setting of correspondence, be included in interface conversion unit.
As shown in Figure 2, above-mentioned interface module 11 comprises:
Mark end USB_ID, connects the identification pine (pin 4) of circumscribed USB interface;
Power end USB_V, connects the power pin (pin 1) of circumscribed USB interface;
In addition, in preferred embodiment of the present utility model, circumscribed USB interface also comprises D+ pin (pin 3), i.e. positive voltage data pins, D-pin (pin 2), i.e. negative voltage data pin, and ground pin (pin 5).
In preferred embodiment of the present utility model, equally as shown in Figure 2, above-mentioned interface module also comprises:
Transmitting terminal TX, connection identifier end, and the serial data receiving terminal (not shown) connecting above-mentioned download test cell;
Receiving terminal RX, connects modular converter, and connects the serial data transmitting terminal (not shown) of above-mentioned download test cell.
First feeder ear USB_VCHG, is downloaded test cell and is powered to the USB device be access in by the first feeder ear USB_VCHG;
Second feeder ear VDD, is supplied to the power supply downloaded test module and normally work.Further, in preferred embodiment of the present utility model, above-mentioned mark end USB_ID also connects transmitting terminal TX; Above-mentioned power end USB_V also connection detection module 12.In preferred embodiment of the present utility model, as shown in Figure 2, above-mentioned detection module 12 comprises:
The source electrode a detecting field effect transistor Q1, this detection field effect transistor Q1 connects above-mentioned power end USB_V, and drain electrode c connects the first feeder ear USB_VCHG, and grid b connects the second feeder ear VDD (for positive voltage).Further, in preferred embodiment of the present utility model, when having detected that serial line interface connects, namely when serial line interface transmitting terminal TX has a Signal transmissions, the source electrode a place then detecting field effect transistor Q1 is electronegative potential, now detect field effect transistor Q1 cut-off, then the connection line between the first feeder ear USB_VCHG and power end USB_V disconnects; Otherwise if when having detected that USB interface connects, then the source electrode a place detecting field effect transistor Q1 has been high potential, now detects field effect transistor Q1 conducting, then the connection line between corresponding conducting first feeder ear USB_VCHG and power end USB_V.Therefore.In preferred embodiment of the present utility model, can by detect field effect transistor Q1 be in cut-off or conducting state judge now whether have serial line interface to access.
In preferred embodiment of the present utility model, above-mentioned detection field effect transistor Q1 is P-channel field-effect transistor (PEFT) pipe (PMOS).
In preferred embodiment of the present utility model, series connection one first resistance R1 between detection field effect transistor Q1 and the first feeder ear VDD.
In preferred embodiment of the present utility model, still as shown in Figure 2, above-mentioned modular converter 13 comprises:
Serial ports end COM, connects the source electrode a of described power end USB_V and described detection field effect transistor Q1 respectively;
Normal-closed end NC (Normal Closing), connects transmitting terminal TX;
Chang Kaiduan NO (Normal Opening), as the open end of modular converter;
Common port K, connects above-mentioned serial ports end COM;
Control signal input IN, is connected to the first feeder ear USB_VCHG by a bleeder circuit (describing in detail hereinafter), inputs corresponding control signal for the testing result according to detection module 12 to modular converter 13.
In preferred embodiment of the present utility model, in above-mentioned modular converter, also comprise one the 3rd feeder ear VCC, the 3rd feeder ear VCC connects the cell voltage VBAT downloading test cell.
In preferred embodiment of the present utility model, when detecting field effect transistor Q1 cut-off, circuit between first feeder ear USB_VCHG and power end USB_V is nipped off, what therefore control signal input IN obtained from the first feeder ear USB_VCHG is low-potential signal, this low-potential signal controls to connect the connection line between common port K and normal-closed end NC, thus connect modular converter 13 and transmitting terminal TX, interface conversion unit to be switched to the mode of operation of carrying out communication with serial line interface.
On the contrary, in preferred embodiment of the present utility model, when detecting field effect transistor Q1 conducting, circuit between first feeder ear USB_VCHG and power end USB_V is switched on, what therefore control signal input IN obtained from the first feeder ear USB_VCHG is high potential signal, this high potential signal controls to connect common port K and normal beginning NO, thus modular converter 13 is nipped off with the connection line downloading test cell, therefore whole interface conversion unit is switched to the mode of operation of carrying out communication with USB interface.
Therefore, the purpose of this utility model is, serial line interface access whether is had to determine which kind of work pattern is commutation circuit adopt by detecting, thus control USB interface work or serial line interface work, to be selected the connection line of work at present by modular converter, thus separate USB interface operating circuit and serial line interface operating circuit, save serial line interface and USB interface simultaneously and when depositing, download the manufacturing cost of test fixture.
In preferred embodiment of the present utility model, still as shown in Figure 2, above-mentioned bleeder circuit comprises:
One reference node A, connects above-mentioned first feeder ear USB_VCHG and control signal input IN respectively, and ground connection;
In preferred embodiment of the present utility model, between reference node A and the first feeder ear USB_VCHG, be in series with one second resistance R2, and reference node A is by the 3rd resistance R3 ground connection of a series connection.
In preferred embodiment of the present utility model, as shown in Figure 3, above-mentioned interface conversion unit also comprises:
Base 31, for placing interface conversion unit 32.In preferred embodiment of the present utility model, above-mentioned interface conversion unit 32 is a Download Box comprising foregoing circuit structure, base 31 is provided with the sunk area that adapts to interface conversion unit 32 size, interface conversion unit 32 is fixed in this sunk area.In preferred embodiment of the present utility model, because above-mentioned interface conversion unit 32 fixed by needs, therefore on base 31, be provided with positioning unit 33, for interface conversion unit 32 being fixed in the sunk area of base 31.In preferred embodiment of the present utility model, above-mentioned positioning unit 33 is for being arranged at the location notch on interface conversion unit 32 both sides.
Fixed cell 34, arrange, and wherein one end is fixedly connected on base 31 perpendicular to above-mentioned base 31 place plane.In preferred embodiment of the present utility model, above-mentioned fixed cell 34 is a fixed panel, is arranged at the edge of the sunk area of base 31.
Active unit 35, is movably connected on fixed cell 34, and towards or the side that deviates from base 31 move up.In preferred embodiment of the present utility model, this active unit 35 can comprise:
Drop front 351, is parallel to base 31 and arranges, and be positioned at the top of base 31, and its one end is movably connected on fixed cell 34;
Motion bar 352, is connected with drop front 351, for drive according to external force drop front 351 towards or deviate from base 31 and move;
Joystick 353, connects motion bar 352, controls motion bar 352 for user, thus control drop front 351 towards or deviate from base 31 and move.
In preferred embodiment of the present utility model, above-mentioned communication interface switching device shifter also comprises:
Test cell 36, is arranged on above-mentioned drop front 351.In preferred embodiment of the present utility model, above-mentioned test cell 36 is test probe, the quantity of test probe with actual test case for reference.As shown in Figure 3, one end of test probe 36 is connected in interface conversion unit 32 by wire, the other end connects the communication interface (USB interface or serial line interface) of mobile phone to be measured, to determine the interfaces pattern now carrying out downloading test according to the communication interface of connected mobile phone to be measured.
The foregoing is only the utility model preferred embodiment; not thereby execution mode of the present utility model and protection range is limited; to those skilled in the art; should recognize and all should be included in the scheme that equivalent replacement done by all utilization the utility model specifications and diagramatic content and apparent change obtain in protection range of the present utility model.
Claims (10)
1. a communication interface switching device shifter, is applicable to, in the communication interface test technology of mobile phone, it is characterized in that, comprising:
Interface conversion unit, connects the communication interface of mobile phone to be measured, and for changing the mode of operation of described communication interface switching device shifter according to the described communication interface connected;
Described interface conversion unit comprises:
Interface module, connects the described communication interface of mobile phone to be measured;
Detection module, connects described interface module, for detecting the type of the described communication interface that described interface module connects;
Modular converter, connects described detection module, for the testing result according to described detection module, described interface conversion unit is converted to the pattern with USB interface communication, or with the pattern of serial port communication.
2. communication interface switching device shifter as claimed in claim 1, it is characterized in that, described interface module comprises:
Mark end, connects the identification pine of described USB interface respectively;
Power end, connects the power pin of described USB interface;
Transmitting terminal, connects described mark end, and connects the serial data receiving terminal of a download test cell;
Receiving terminal, connects described modular converter, and connects the serial data transmitting terminal of described download test cell.
3. communication interface switching device shifter as claimed in claim 2, it is characterized in that, described detection module comprises:
Detect field effect transistor, source electrode connects described power end and described modular converter respectively, and drain electrode connects one first feeder ear of described download test module, and grid connects one second feeder ear of described download test module;
Described detection field effect transistor is ended when having detected that described USB interface accesses, and connects when having detected that described serial line interface accesses;
Described first feeder ear is used for powering to the USB device be access in;
Described second feeder ear normally to work required power supply for providing described download test module.
4. communication interface switching device shifter as claimed in claim 3, it is characterized in that, described detection field effect transistor is a P-channel field-effect transistor (PEFT) pipe.
5. communication interface switching device shifter as claimed in claim 3, is characterized in that, be in series with one first resistance between the described grid of described detection field effect transistor and described second feeder ear.
6. communication interface switching device shifter as claimed in claim 3, it is characterized in that, described modular converter comprises:
Serial ports end, connects the source electrode of described power end and described field effect transistor respectively;
Normal-closed end, connects described receiving terminal;
Chang Kaiduan, as the open end of described modular converter;
Common port, connects described serial ports end;
Control signal input, is connected to described first feeder ear of described download test module, inputs corresponding control signal for the testing result according to described detection module to described modular converter by a bleeder circuit;
Described modular converter connects described common port and described normal-closed end when described detection module has detected that described serial line interface accesses, and connects described common port and described Chang Kaiduan when described detection module has detected that described USB interface accesses.
7. communication interface switching device shifter as claimed in claim 6, it is characterized in that, described bleeder circuit comprises:
Reference node, connects described feeder ear and described control signal input respectively, and ground connection;
Second resistance, is connected between described reference node and described feeder ear;
3rd resistance, described reference node is by described 3rd grounding through resistance.
8. communication interface switching device shifter as claimed in claim 1, is characterized in that, also comprise:
Base, for placing described interface conversion unit;
Fixed cell, is arranged with described base place plane orthogonal, and one end of described fixed cell is connected on described base;
Active unit, is connected on described fixed cell, and towards or deviate from described base and move;
Test linkage unit, be arranged in described active unit, one end of described test linkage unit connects described interface module by wire, and the other end connects the described communication interface of mobile phone to be measured.
9. communication interface switching device shifter as claimed in claim 8, it is characterized in that, described active unit comprises:
Drop front, be arranged in parallel with described base, and is positioned at above described base;
Motion bar, connects described drop front, for drive described drop front towards or deviate from described base and move;
Joystick, connects described motion bar, controls described motion bar for user;
Described test linkage unit is test probe, connects through described drop front.
10. communication interface switching device shifter as claimed in claim 8, is characterized in that, also comprise:
Positioning unit, is arranged on described base, for described interface conversion unit is fixed on described base;
Described positioning unit is location notch, and described location notch is arranged at the both sides of described interface conversion unit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420346722.8U CN204069101U (en) | 2014-06-25 | 2014-06-25 | A kind of communication interface switching device shifter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420346722.8U CN204069101U (en) | 2014-06-25 | 2014-06-25 | A kind of communication interface switching device shifter |
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| CN204069101U true CN204069101U (en) | 2014-12-31 |
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| CN201420346722.8U Expired - Fee Related CN204069101U (en) | 2014-06-25 | 2014-06-25 | A kind of communication interface switching device shifter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160335212A1 (en) * | 2015-05-11 | 2016-11-17 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Device for switching between communication modes |
| CN111327498A (en) * | 2018-12-14 | 2020-06-23 | 南台学校财团法人南台科技大学 | Power line communication module, system and signal transmission method for vehicle diagnosis information |
-
2014
- 2014-06-25 CN CN201420346722.8U patent/CN204069101U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160335212A1 (en) * | 2015-05-11 | 2016-11-17 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Device for switching between communication modes |
| US9804986B2 (en) * | 2015-05-11 | 2017-10-31 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Device for switching between communication modes |
| CN111327498A (en) * | 2018-12-14 | 2020-06-23 | 南台学校财团法人南台科技大学 | Power line communication module, system and signal transmission method for vehicle diagnosis information |
| CN111327498B (en) * | 2018-12-14 | 2022-04-19 | 南台学校财团法人南台科技大学 | Power line communication module, system and signal transmission method for vehicle diagnosis information |
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